Ferg will be back, probably tomorrow night, Frankie will have another stint but yeah, they killed off Bea too early.
They try and be too much like the first "underbelly", where they introduce a new character each week, trouble is that they rush everything to fit into one episode. Frankie went from being shot at as a fugitive on week to being caught late in the next episode to being released free of charge 5 minutes later, could've made more of a story out of it and wasn't very realistic, it's getting boring and mundane, could at least chuck in a few more sex scenes to fill in some time.